Amazon Bedrock AgentCore Runtime vs LangSmith Sandboxes

Amazon Bedrock AgentCore Runtime costs $0.0895 per vCPU-hour and LangSmith Sandboxes costs $0.0576 per vCPU-hour. Amazon Bedrock AgentCore Runtime runs microVMs and limits a session to 8 hours. LangSmith Sandboxes runs Firecracker microVMs.

Updated Oct 23, 2026

Amazon Bedrock AgentCore Runtime

Hosts AI agents on AWS and runs each user session in its own microVM.

Isolation: MicroVM
Free tier: Not listed
Max session: 8 hours

Visit site Amazon Bedrock AgentCore Runtime profile

LangSmith Sandboxes

Isolated sandboxes for running agent-generated code.

Isolation: Firecracker microVM
Free tier: Credit of 8 LSU every month
Max session: Not listed

Visit site LangSmith Sandboxes profile

What is different

8 fields differ. The rest are the same or not listed.

Field

Amazon Bedrock AgentCore Runtime

LangSmith Sandboxes

vCPU, per hour: Amazon Bedrock AgentCore Runtime: $0.0895; LangSmith Sandboxes: $0.0576
RAM, per GiB-hour: Amazon Bedrock AgentCore Runtime: $0.00945; LangSmith Sandboxes: $0.01845
Storage: Amazon Bedrock AgentCore Runtime: Session storage is free during preview. Code storage is billed at Amazon ECR or S3 rates; LangSmith Sandboxes: $0.000123 per GiB-hour
Billing: Amazon Bedrock AgentCore Runtime: Active CPU time only; LangSmith Sandboxes: Per second
Idle stop: Amazon Bedrock AgentCore Runtime: After 15 minutes; LangSmith Sandboxes: After 10 minutes
Largest sandbox: Amazon Bedrock AgentCore Runtime: 2 vCPU · 8 GiB; LangSmith Sandboxes: 16 vCPU · 64 GiB
Isolation: Amazon Bedrock AgentCore Runtime: MicroVM; LangSmith Sandboxes: Firecracker microVM
Integrations: Amazon Bedrock AgentCore Runtime: Claude Agent SDK, LangChain, MCP, OpenAI Agents SDK; LangSmith Sandboxes: LangChain, MCP

Full comparison

18 fields, at each provider's list price

Amazon Bedrock AgentCore Runtimeaws.amazon.com/bedrock/agentcore/pricingaws.amazon.com

LangSmith Sandboxeslangchain.com/pricinglangchain.com

Pricing

vCPU, per hour: Amazon Bedrock AgentCore Runtime: $0.0895; LangSmith Sandboxes: $0.0576
RAM, per GiB-hour: Amazon Bedrock AgentCore Runtime: $0.00945; LangSmith Sandboxes: $0.01845
Storage: Amazon Bedrock AgentCore Runtime: Session storage is free during preview. Code storage is billed at Amazon ECR or S3 rates; LangSmith Sandboxes: $0.000123 per GiB-hour
Free tier: Amazon Bedrock AgentCore Runtime: Not listed; LangSmith Sandboxes: Credit of 8 LSU every month
Paid plan from: Amazon Bedrock AgentCore Runtime: Pay as you go; LangSmith Sandboxes: Pay as you go
Billing: Amazon Bedrock AgentCore Runtime: Active CPU time only; LangSmith Sandboxes: Per second

Limits

Max session: Amazon Bedrock AgentCore Runtime: 8 hours; LangSmith Sandboxes: Not listed
Idle stop: Amazon Bedrock AgentCore Runtime: After 15 minutes; LangSmith Sandboxes: After 10 minutes
Largest sandbox: Amazon Bedrock AgentCore Runtime: 2 vCPU · 8 GiB; LangSmith Sandboxes: 16 vCPU · 64 GiB
Concurrent sandboxes: Amazon Bedrock AgentCore Runtime: Up to 5,000; LangSmith Sandboxes: Not listed

Platform

Isolation: Amazon Bedrock AgentCore Runtime: MicroVM; LangSmith Sandboxes: Firecracker microVM
GPU: Amazon Bedrock AgentCore Runtime: Not listed; LangSmith Sandboxes: Not listed
Snapshots: Amazon Bedrock AgentCore Runtime: Not listed; LangSmith Sandboxes:
Pause and resume: Amazon Bedrock AgentCore Runtime:; LangSmith Sandboxes:

Developer

SDKs: Amazon Bedrock AgentCore Runtime: Python, TypeScript; LangSmith Sandboxes: Python, TypeScript
Integrations: Amazon Bedrock AgentCore Runtime: Claude Agent SDK, LangChain, MCP, OpenAI Agents SDK; LangSmith Sandboxes: LangChain, MCP

Trust

License: Amazon Bedrock AgentCore Runtime: Not listed; LangSmith Sandboxes: Not listed
BYOC: Amazon Bedrock AgentCore Runtime: Not listed; LangSmith Sandboxes: Enterprise plan

Hourly cost

One sandbox running for one hour

Size

Amazon Bedrock AgentCore Runtime

LangSmith Sandboxes

1 vCPU · 2 GiB: Amazon Bedrock AgentCore Runtime: $0.108; LangSmith Sandboxes: $0.095
2 vCPU · 4 GiB: Amazon Bedrock AgentCore Runtime: $0.217; LangSmith Sandboxes: $0.189
4 vCPU · 8 GiB: Amazon Bedrock AgentCore Runtime: $0.434; LangSmith Sandboxes: $0.378

Compute only, at list rates.

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Which one fits

Based on the fields above

Amazon Bedrock AgentCore Runtime fits when

You use the Claude Agent SDK or the OpenAI Agents SDK.
Your code waits a lot: CPU is billed only while it is in use.
You need SOC 2 and ISO 27001.

LangSmith Sandboxes fits when

You want the lower list price: $0.189 against $0.217 an hour for 2 vCPU and 4 GiB.
You need snapshots.
You need the sandboxes in your own cloud account.
You need a sandbox larger than 2 vCPU · 8 GiB.

More comparisons

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Amazon Bedrock AgentCore Runtime

LangSmith Sandboxes

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Amazon Bedrock AgentCore Runtime fits when

LangSmith Sandboxes fits when

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